InsuBlock 25kg/m³
Insutech EPS 25 Block is a white, medium-high density expanded polystyrene block manufactured at 25 kg/m³ (±5%).
Engineered for the job it protects.
Insutech EPS 25 Block is a white, medium-high density expanded polystyrene block manufactured at 25 kg/m³ (±5%). Supplied as standard 4m × 1.20m × 1m blocks or custom CNC-cut shapes, EPS 25 is the go-to specification where higher compressive strength (≥ 150 kPa) is required alongside outstanding thermal performance. It is widely used in inverted roof assemblies, ground-bearing floor slabs, and geofoam embankment projects across the region.
With a thermal conductivity of ≤ 0.034 W/mK, Insutech EPS 25 Block delivers among the best R-values in the range, minimising heat transfer through heavily loaded construction assemblies and contributing to long-term energy savings.
- Thermal conductivity ≤ 0.034 W/mK — among the best in the EPS block range
- High compressive strength ≥ 150 kPa for inverted roofs, loaded floors, and geofoam
- Superior R-values: R30 = 0.88, R50 = 1.47, R60 = 1.76 (m²K)/W
- Available in standard 4m × 1.20m × 1m blocks or custom CNC-cut shapes
- White, closed-cell EPS — moisture-resistant and dimensionally stable
- Low water absorption: ≤ 3% by volume (EN 12087)
- Class E fire rating per EN 13501-1; maximum service temperature 75°C
- Resistant to moisture and most common construction chemicals
Application, Step by Step.
Set out the block layout from the drawings, confirming spans, spacing and bearing details before any blocks are placed on site.
Prepare and level the supporting joists, beams or substrate, checking that bearings are clean, aligned and ready to receive blocks.
Place the blocks tightly together along the supports, working row by row and cutting end pieces cleanly for a snug, stable fit.
Check lines, levels and joints across the whole area, adjusting any misplaced blocks before reinforcement or services are installed.
Fix the specified reinforcement and route any services, keeping the block surfaces undamaged and joints fully closed throughout.
Pour the structural topping or finish layers as specified, compacting carefully so the completed system performs as it was designed.
